Symbol: KAtomic Number: 19Atomic Weight: 39.0983Classification: Alkali metalPhase at Room Temperature: SolidDensity: 0.86 grams per cm cubedMelting Point: 63.38°C, 146.08°FBoiling Point: 759°C, 1398°FDiscovered by: teacher Humphry Davy in 1807Potassium is the fourth element in the very first column that the periodic table. The is classified as an alkali metal. Potassium atoms have 19 electrons and also 19 protons through one valence electron in the outer shell. Potassium is considered chemically comparable to sodium, the alkali metal over it ~ above the periodic table.Characteristics and also PropertiesUnder standard problems potassium is a soft silvery-white metal. It is for this reason soft that it can be easily reduced with a knife. Once cut, the exposed steel tarnishes quickly and also forms a dull oxide coating.Potassium has actually a really low melting suggest such that even a candle can cause it come melt. As soon as it burns, it produces a pale purple colored flame. Potassium likewise has a really low density and is the 2nd least thick metal after ~ lithium. It is therefore light that it have the right to float in water.Chemically, potassium is a really active metal. It reaction violently once coming into contact with water, creating heat and also hydrogen gas. It also reacts with many other elements and substances such together oxygen, acids, sulfur, fluorine, and nitrogen.


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Where is potassium found on Earth?
Because potassium reaction so easily with water, it is not discovered in that is elemental type in nature. Rather it is discovered in various minerals such together sylvite, carnallite, langbeinite, and kainite. Most minerals the contain potassium are described as potash.Making up around 2.1% that the load of the Earth"s crust, potassium is the eighth many abundant aspect in the crust. The can also be found in ocean water where it is also around the eighth most abundant element.How is potassium provided today?The largest use of potassium is potassium chloride (KCl) which is offered to make fertilizers. This is because potassium is vital for plant growth.Industrial applications because that potassium include soaps, detergents, yellow mining, dyes, glass production, gunpowder, and batteries.Potassium likewise plays a critical role in our bodies. That is supplied in muscle contraction, fluid and pH balance, bone health, and helps to prevent kidney stones. That is around the eighth many abundant element in the human being body by weight.How to be it discovered?Potassium was an initial isolated by English chemist teacher Humphry Davy in 1807. That used electrical energy to separate the element from the salt potash.Where walk potassium get its name?Potassium gets its surname from the salt potash native which potassium was an initial isolated. The K symbol because that the element comes from the Latin indigenous "kalium", which method potash.IsotopesThere are three isotopes of potassium that occur naturally: K-39, 40, and 41. The majority (93%) the potassium found in nature is K-39.
Interesting Facts about Potassium
Potassium chloride (KCl) is periodically used as a substitute for table salt. The USDA proposal that adults consume 4.7 grams that potassium each day.A small amount that potassium have the right to taste sweet. A higher concentration deserve to taste bitterness or salty.Potassium bicarbonate is the chemical name for baking soda. The is offered in fire extinguishers, baking powders, and antacids.Some an excellent sources that potassium in our diet encompass bananas, avocados, nuts, chocolate, parsley, and potatoes.More on the Elements and the routine TableElementsPeriodic Table
Alkali MetalsLithiumSodiumPotassiumAlkaline planet MetalsBerylliumMagnesiumCalciumRadiumTransition MetalsScandiumTitaniumVanadiumChromiumManganeseIronCobaltNickelCopperZincSilverPlatinumGoldMercuryPost-transition MetalsAluminumGalliumTinLeadMetalloidsBoronSiliconGermaniumArsenicNonmetalsHydrogenCarbonNitrogenOxygenPhosphorusSulfurHalogensFluorineChlorineIodineNoble GasesHeliumNeonArgonLanthanides and also ActinidesUraniumPlutonium
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